SERVICE BULLETIN MANDATORY SB 55-4089, Rev. 1

Not applicable. SERVICE BULLETIN Issued: October, 2011 Revised: February, 2012 3 of 8 SB 55-4089, Rev. 1 MANDATORY M. Warranty Credit Warranty credit for labor and parts to the extent noted under MANPOWER and MATERIAL will be allowed on all affected airplanes that are under standard warranty coverage on the date of issuance of this Service Bulletin. Credit will be given for any airplanes that have an active HBC Maintenance Program for labor and parts, if coverage is active and the work is accomplished prior to the warranty expiration date listed in this Service Bulletin. Claims for compliance with this Service Bulletin are to be filed as a W3-type claim against SB 55-4089, Revision 1. Warranty coverage offered in this Service Bulletin will expire 12 months from the last day of the month Revision 1 of this Service Bulletin is issued. After this date, the owner/operator assumes the responsibility for compliance cost. Hawker Beechcraft Corporation (HBC) reserves the right to void continued warranty coverage in the area affected by this Service Bulletin until the date the Service Bulletin is accomplished by an HBC Authorized Service Center (ASC). The owner/operator should contact an HBC ASC to schedule the warranty work to be accomplished. The HBC ASC must be rated to perform maintenance on the specific model of Hawker Beechcraft airplane. The HBC ASC will submit the appropriate paperwork directly to the HBC Warranty Department for warranty consideration. In the event that work cannot be accomplished at an HBC ASC, parts may be purchased directly from Hawker Beechcraft Parts & Distribution (HBP&D) and a warranty claim for parts ONLY should be submitted directly to the HBC Warranty Department. After the Service Bulletin has been accomplished, a warranty claim must be submitted to HBC within 60 days of the Service Bulletin completion date. 2. Material Information A. Materials - Price and Availability Contact information: Hawker Beechcraft Parts & Distribution (HBP&D) 10511 East Central Avenue Wichita, KS 67206 USA Phone: 316-676-3100 or 1-888-727-4344 Fax: 316-676-3222 or 316-676-3327 E-mail: HBC_Parts@hawkerbeechcraft.com B. Industry Support Not applicable. SERVICE BULLETIN Issued: October, 2011 Revised: February, 2012 SB 55-4089, Rev. 1 4 of 8 MANDATORY C. Airplanes (1) The following parts, required for accomplishment of this Service Bulletin, may be ordered through a Hawker Beechcraft Authorized Service Center or HBP&D: Hawker Beechcraft Corporation expressly reserves the right to supersede, cancel and/or declare obsolete, without prior notice, any parts or publications that may be referenced in this Service Bulletin. (2) The following materials may be obtained locally: D. Spares Refer to spares notations in Paragraphs 1.A and 3.B of this Service Bulletin. E. Reidentified Parts None. F. Tooling - Price and Availability Not applicable. Part Number Description Quantity Per Airplane 96-610022-5 Elevator Balance Weight Assembly As Required 96-610022-7 Elevator Balance Weight Assembly As Required 96-610022-9 Elevator Balance Weight Assembly As Required 96-610022 Elevator Balance Weight Assembly As Required Maintenance Manual Chapter or Part Number Description Quantity Per Airplane Maintenance Manual Chapter 20-15-00 Paint, Urethane As Required MS24694-S4 Screw As Required AN936D8 or MS35790-9 Washer As Required SERVICE BULLETIN Issued: October, 2011 Revised: February, 2012 5 of 8 SB 55-4089, Rev. 1 MANDATORY 3. Accomplishment Instructions This Service Bulletin shall be accomplished as follows: NOTE Should any difficulty be encountered in accomplishing this Service Bulletin, contact Hawker Beechcraft Corporation at 1-800-429-5372 or 316-676-3140. Observe all Warnings and Cautions contained in the airplane manuals referenced in this Service Bulletin. Whenever any part of th is system is dismantled, adjusted, repaired or renewed, detailed investigation must be made on completion to make sure that distortion, tools, rags or any other loose articles or foreign matter that could impede the free movement and safe operation of the system are not present, and that the systems and installations in the work area are clean. A. Airplane (1) Remove all power from the airplane and disconnect the battery. Display warning notices prohibiting reconnection of airplane electrical power. NOTE The following steps apply to the left and right elevator balance weight assemblies. NOTE Elevator weights have been built to multiple type design revisions and may have five (5) inserts as shown in Figure 1 or four (4) inserts. (2) Gain access to the elevator and locate the existing elevator balance weight assembly that is installed under the elevator horn skin. Refer to Figure 1 and Figure 2. (3) Visually inspect to determine if the existing elevator balance weight assembly is in position and protruding from the edge of the rib. In addition, verify that the elevator balance weight assembly attachment screws on upper and lower surfaces are secure and the installation holes show no sign of discoloration. Refer to Figure 1 and Figure 2. (a) If the existing elevator balance weight assembly is in position, protruding from the edge of the rib, the attachment screws are secure and the installation holes show no sign of discoloration, no further action is required for this Service Bulletin. Proceed to Step (13). (b) If the existing elevator balance weight assembly has become dislodged, the attachment screws are not secure, or the installation holes show signs of discoloration, proceed to Step (4). (4) Remove the existing screws and associated attachment hardware from the elevator horn skin. Retain the removed screws and associated attachment hardware. SERVICE BULLETIN Issued: October, 2011 Revised: February, 2012 SB 55-4089, Rev. 1 6 of 8 MANDATORY (5) Remove the existing elevator balance weight assembly from its position under the elevator horn skin. (6) Weigh the removed elevator balance weight assembly to determine which replacement elevator balance weight assembly shall be installed. Part numbers apply to the weight of the removed elevator balance weight assembly as follows: Elevator balance weight assembly, P/N 96-610022 = 3.4 +/- 0.10 LB Elevator balance weight assembly, P/N 96-610022-5 = 3.55 +/- 0.10 LB Elevator balance weight assembly, P/N 96-610022-7 = 3.9 +/- 0.10 LB Elevator balance weight assembly, P/N 96-610022-9 = 4.10 +/- 0.05 LB (7) Use the screws and associated attachment hardware that were retained in Step (4) to install the applicable new elevator balance weight assembly. Note: New hardware may be used as necessary, as defined in Paragraph 2.C.2. The installed elevator balance weight assembly shall protrude from the rib as shown in Figure 2. (8) Touch-up paint as necessary in accordance with Maintenance Manual (MM), Chapter 20-15-00. In addition, observe practices for painting the elevator that are defined in MM Chapter 51-60-00. (9) Remove the elevator in accordance with MM Chapter 27-30-00. (10) Perform elevator control surface balancing procedure in accordance with MM Chapter 51-60-00. (11) Install the elevator in accordance with MM Chapter 27-30-00. (12) Tag, mark, and dispose of the removed elevator balance weight assembly. (13) Reconnect the airplane battery, remove warning notices, and restore power. (14) Ensure all work areas are clean and clear of tools and miscellaneous items of equipment. (15) Return airplane to service. B. Spares Purge spares stock of any Baron elevator balance weight assembly [defined in Paragraph 1.A.(2)] that was purchased between January 1, 1996 and December 31, 2005. Tag, mark and dispose of the purged elevator balance weight assembly. C. Record of Compliance Upon completion of this Service Bulletin, make an appropriate maintenance record entry. SERVICE BULLETIN Issued: October, 2011 Revised: February, 2012 7 of 8 SB 55-4089, Rev. 1 MANDATORY Inspection of Elevator Balance Weight Assembly Figure 1 SERVICE BULLETIN Issued: October, 2011 Revised: February, 2012 SB 55-4089, Rev. 1 8 of 8 MANDATORY Inspection of Elevator Balance Weight Assembly Figure 2